Traditional Culture Encyclopedia - Photography major - The principle of photogrammetry?
The principle of photogrammetry?
It is based on three-dimensional digital images, through computer image processing and image matching, automatically identify the corresponding image points and coordinates, determine the three-dimensional coordinates of the photographed object through analytical photogrammetry, output digital elevation models and orthophoto digital images, or draw contour maps, orthophoto maps and other geographical information with contour lines.
Definition:
In a broad sense, digital photogrammetry refers to the use of data obtained from photogrammetry and remote sensing, through digital photographic images or digitized images, to carry out various numerical values, images and image processing in the computer, to study the geometric and physical characteristics of the target, so as to obtain various forms of digital products and visual products. Digital photogrammetry is divided into computer-aided mapping and image digital mapping (including hybrid digital photogrammetry and full digital photogrammetry).
Workflow of Digital Photogrammetry System
(1) Collection of Digital Photography
(2) Positioning of digital photography
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